An investigation has begun at a U.S. nuclear facility after radioactive material was found on a worker’s clothing. A contractor with Washington River Protection Solutions also noticed a spike in radiation levels on a device called a “crawler” that had been taken out of a nuclear waste tank.

Moon has said South Korea should engage in dialogue with the DPRK and learn to “say no to America,” placing Korean interests first.

All eyes are on Seoul after South Korea’s Democratic Party President Moon Jae-In was sworn in Wednesday, promising to ease the crisis on the Korean peninsula and balance relations with long-time ally the United States and its rising neighbor, China.

Moon said in his first speech as president he would begin efforts to defuse tensions in the region.

“I will urgently try to solve the security crisis,” Moon said in the domed rotunda hall of the parliament building. “If needed, I will fly straight to Washington. I will go to Beijing and Tokyo and, if the conditions are right, to Pyongyang also.”